The natural range of this species extends down the Rio Solimões and along the main Amazon river, between the Rio Putamayo in Colombia and Peru as far as the Rio Tocantins drainage in Brazil. Introduced populations also exist in the neighbouring countries of Guyana and Suriname.
It’s not often seen in the main river channels, being mostly found in slow-moving tributaries and forest pools. Here it lives in schools in deep, sheltered areas around tree roots and rocks.
Maximum Standard Length
The maximum size reported for wild Discus is around 14cm (6″). It is however claimed that Discus can actually reach 9″ in aquaria through a stringent regime of frequent, large water changes during the most important growth periods. See “Notes” for more information.
Aquarium SizeTop ↑
Although Discus only grow to around 6″, they can grow to be as tall as they are long. A breeding pair should have plenty of space both horizontally and vertically, so a tank around 48″ x 18″ x 18″ (120cm x 45cm x 45cm) – 255 litres is recommended for a few juvenile fish or a pair of breeding adults.
Many Discus fanatics choose to go down the heavily planted route which can be particularly beneficial to Symphysodon aequifasciatus due to the amount of cover afforded by such a setup. Discus are very shy, skittish fish and require as much cover as possible to feel comfortable.
Wild fish feed mainly on zoplankton, insects and other small invertebrates.